package com.lg.patter.behavior.observed.callback;

/**
 * 回调者
 *
 * @author by Mr. Li 2020/6/11 13:00
 */
public class Caller {
    public void call(ICallBack callBack) {
        System.out.println("call start...");
        callBack.callBack();
        System.out.println("callBack ending...");
    }
}
